/ Dictionary / Index M molecular genetics: Meaning and Definition of Find definitions for: molec'ular genet'ics Pronunciation: [key] a subdivision of genetics concerned with the structure and function of genes at the molecular level. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. molecular formula molecularity Related Content Daily Word Quiz: leonine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language